<template>
    <el-container class="home-container">
      <!--头部区域 -->
      <el-header>
        <div>
          <img src="../assets/heima.png" alt="">
          <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="logout">退出</el-button>
      </el-header>
      <!--页面主体区域-->
      <el-container>
        <!--侧边栏-->
        <el-aside :width="isCollapse ? '64px' : '200px'">
          <div class="toggle-button" @click="toggleCollapase">|||</div>
          <!--侧边栏菜单区域-->
            <el-menu :default-active="activePath" router unique-opened :collapse-transition="false"
            background-color="#333744" :collapse="isCollapse" text-color="#fff" active-text-color="#409bff" >
              <!--1级菜单-->
              <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                <!--1级菜单模板区域-->
                <template slot="title">
                  <!--图标-->
                  <i :class="iconsObj[item.id]"></i>
                  <!--文本-->
                  <span>{{item.authName}}</span>
                </template>
                <!--二级菜单-->
                <el-menu-item :index="'/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id"
                              @click="saveNavState('/'+ subItem.path)">
                  <template slot="title">
                    <!--图标-->
                    <i class="el-icon-menu"></i>
                    <!--文本-->
                    <span>{{subItem.authName}}</span>
                  </template>
                </el-menu-item>
              </el-submenu>
            </el-menu>
        </el-aside>
        <!--右侧内容-->
        <el-main>
          <!--路由占位符-->
          <router-view/>
        </el-main>
      </el-container>
    </el-container>

</template>

<script>
export default {
  name: 'home',
  data() {
    return {
      menulist: [],
      iconsObj: {
        '125': 'iconfont icon-users',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: false
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      // console.log(res)
      if (res.meta === 200) return this.$message.error((res.meta.msg))
      this.menulist = res.data
    },
    //  点击按钮切换按钮折叠
    toggleCollapase() {
      this.isCollapse = !this.isCollapse;
    },
    // 保存链接的激活转态
    saveNavState(activePath) {
      // console.log(activePath)
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container{
  height: 100%;
}
.el-header {
  background: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items:center;
  color: #fff;
  font-size: 20px;
  > div{
    display: flex;
    align-items: center;
    span{
      margin-left: 15px;
    }
  }
}
.el-aside {
  background: #333744;
  .el-menu{
    border: none;
  }
  .toggle-button{
    background: #4a5064;
    text-align: center;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    letter-spacing: 0.2em;
    cursor: pointer;
  }
}
.el-main {
  background: #eaedf1;
}
  .iconfont{
    margin-right: 10px;
  }
</style>
